Oil-burning engine



Sept. 22, 1925.

B. c. SSMETH OIL BURNING ENGINE Filed Dec. 2. 1924 v2 sheets-sheet 1 z 4 5 a 3 7. wZ/Z 8 f ,1 m 8 r2 WW o o 5 o mm Q Ha l G 7 R: Q Z f 2 e Tl 2 Z 1 t J F E W v a FF. if. LL H 1,55%,914 B. c. SMITH OIL BURNING ENGINE Sept. 22, 1925.

Filed Dem z, 1924" 2 sheen-sheet 2 kNVENT-DR (Ewe M q ATTORNEY? Patented Sept. 22, 1925.

UNITED STATES PATENT OFFICE.

BENJAMIN C. SMITH, Q35 BAYONNE, JERSEY, ASSIGNOB TO MOTOR GONSTRUCTTON COMPANY, QF'JERQEY CITY, NEifi-J J'EESEY, A, CORPORATION OF NEW JERSEY.

OIL-BURNING ENGINE.

Application filed December 2,- 1524. aerial 1%. $53,503.

To all whom it may concern: 1 Be it known that LBENJA LN SMITH, a citizen of the United States of America, residing at Bayonne, New Jersey, have in vented anew and. useful Oil-Burning Engine, of which the following is a specifica- .tion. v

My invention relatesto certainnew and useful improvements in engines of the socalled Diesel type and comprising a plurality of cylinders operating on a single crank shaft.

The main object of the present invention is to provide a simple and effective means for adjusting and controlling the time of operation of the fuel feed valves.

1 In the drawingsy Fig. 1 is a side elevation of an engine conparts being omitted and other brokenaway. r

Fig. 2 is a relatively enlarged cross sectional view of a cylinder looking down on certain parts shown in elevation, this view being taken on the line 2-2 of Fig. 1.

Fig. 3 is a relatively enlarged longitudinal section of part of the adjusting and controlling mechanism r T Fig. 4 is an end view, partly in section, of one of the cylinders and associated parts, certain portions being broken away.

portions bemg 1 represents the engine base. 2 isone of.

the cylinders. 3 is a. fuel feed valve mounted in the upper part of the cylinder 2, and.

1 through which fuel is forced at the proper time. 4 represents a cam shaft driven in the usual way from the engine shaft (not shown). 5 is a rocker arm mounted on a suitable shaft support 6. One end of this arm engages the cam shaft, the other end passing through a slotted pivot stud 7 at the lower end of a draw-rod 8, which is connected at its upper end to a rocker 9, pivoted at 10 and having a fork 11 suitably engaging the stem 12 of the fuel inlet valve, sothat the latter will be opened at the proper time by the operation of a cam on the cam shaft 4. The particular mechanical construction of these various parts, as well as the mechanical construction of the fuel feed valve is non-essential.

My invention relates more particularly to the means by which the operation of the fuel feed valve may be controlled, and this is shown more in detail in the sectional structed to embody my invention, certain.

the'same when the nut. 23 on bolt view, Fig. 3. It will be observed thatthe lower end of the draw-rod 8 is mounted in a sleeve 13, which latter is threaded on outer. side toward the lower end and makes threaded engagement Y a part of the drawrod. The sleeve 14 carries the slotted stud 7 and slides in a bushing v15 in the base 1 of the engine. .The lower end of the rod 8 proper with a head 8, which is held normally against the under side of the sleeve 13 by the tension of the spring 16 or by any other suitable means. v

It is obvious thatyifmeans are provided to turn the sleeve 13 relatively to the sleeve 14, the former will move longitudinally relatively thereto in one. direction orthe other, and it is by thus shifting the relative angular position of these two sleeves 13 and 14 that the over all operative length of the draw-rod may be changed so as to produce a corresponding change in the length of time .that the fuel feed valve will beheld open. To provide means for rotating the sleeve 13 relatively to the sleeve 14 while the'engins is running I preferably employa construction as shown in the drawings, comprising an arm 17 secured to the upper end of the sleeve 13 and another arm 18 whicln is secured on said sleeve 13. 20 is a stud bolt mountedon the arm 13, and 21 is a gear mounted to turn on the stud bolt 20. 22is a thumb piece on the gear. 21 for rotating freed. The outer edge of the arm 1.7 is formed as a segment, and the gear 21 meshes therewith. By loosening the nut 23 the gear 21 may be rotated so as to shift the angular position of the arm 18 relatively to the arm 17, thereby varying the fixed adjustment of the sleeves 1314. When the desired adjustment has been made the nut 23 may be screwed down to lock the gear 21, whereupon the arm 18 will have a fixed angular position relatively to the sleeve 13. 24 is a link which is secured to the outer end of the arm 18, and this link 24 may be connected with an operating lever 25, which may be associated with a segment 26 so that, by swinging the lever 25 to and fro, the arm 18 may be swung to and fro, thereby turning the sleeve 13 in the sleeve 14 and length.- ening or shortening the operative over all length of the draw-rod 8, and thereby variwitha surrounding. sleeve 14 which sleeves may be-regarded as is. provided ably controlling the operation of the fuel feed valve 3. Each cylinder may be provided with a corresponding means in connection with, the draw-rod thereon for the fuel feed valve, and in order that the fuel feed valves in the several cylinders may be controlled in unison these controlling parts may be connected by links, one of which is indicated at 27.

I claim: v i

, an engine of the vcharacter de scribed, a fuel feed valve for each cylinder unit, acani shaft, a: connection between the camshaft and said valve, in clndiiig a rod, a rocker actiiatedl by the cam" shaft and in ti rn a ctii ating the rod, and means rorvarving t.he' effective length of said rod" while the engine i's'in motion to the operation of said fuel feed, valve, said mea'ns' 1neluding a non -rotatable sleeve extension, on

said rod and a relatively rotatable sleeve extension on said rod, a screw thread connection between said sleeves, and meansf'or turning one of said sleeves relatively to the other, for thea'foresaid purpose.

. In an engine of the character described, afu'el'fe'e'd' valve for each cylinder unit, a cam shaft, a connection between the cam shaft and said valve, including a rod, a rocker 'actua-ted'by the cam shaft and" in turn actuating the rod, andnie'ans for varying the effective length of said rod' While the engine isin" motion to vary the; operation of said fuel feedjva'lve, said means including a non-rot'atable'sleeve e'xtensionon said rod and a relatively rotatablesleeve extension on' said r'od', a screw thread connection between said sleeves, and means for turning one of said sleeves relatively to the other, for thea'fore'said purpose, comprising an arm projecting laterally therefrom and a manually operable link connected to said arm.- I

3. In an engine of the character described, a fuel feed valve foreach cylinder unit, a cam shaft, a connection between the' cam shaft and said valve, including a rod, rocker actuated by the cam shaft and 111 ing an arm projecting laterally therefrom and a manually operable link connected to said arm, a second arm carried by the same sleeve and adjustable with respect to the first arm' and located between the first" arm and said link.

In a multi-cylinder engine of the chara o'te r described, valves for each cylinder unit including a fuel feed valve, a'cam shaft foroperating all of said valves, connections between said cain shaft aiid'the fuel feed valves in each unit, each connection comprising a rocker arm actuated by the cam shaft, and an extensible rod engaged by said rocker arm, and means whereby the effective length of allofsaid rodsmay' be simultaneously increased or diminished while the engine is running.

5. Ina multi-cylinder engine of the character described, valves for each cylinder unit including a fuel feed valve, a cam shaft for operating all of said valves,-connections between said cam shaft and the"fue' l feed valves'in each umt, each connection comprising a rocker armactuatedby'theoam shaft,

and an extensible rod engaged by said rocker arm, and means whereby the' effective length of all of sa1d rods may be simultaneously I increased or diminished while the engine is running, sa1d means'including a sleeveexten'si'on on each rod and a sleeve extension on each first-mentioned sleeve, screw thread connections between each set of sleeves, one of the sleeves in each set being rotatable relatively to the" other, for the'aforesaid purpose.

BENJAMIN G. SMITI-IQ 

